Fluorine (F) – Element 9 of the periodic table
Fluorine (symbol F) is element number 9 of the periodic table and belongs to the “Halogen” category. Its atomic mass is about 18.998, and its phase under standard conditions is Gas. This element sits in period 2 and group 17 of the periodic table, and its electrons are arranged in shells of 2, 7. The short electron configuration of Fluorine is [He] 2s² 2p⁵. Known uses of Fluorine include Toothpaste, Refrigerants and Uranium production.